量子微结构中的电子-光子耦合激发

项目名称： 量子微结构中的电子-光子耦合激发

项目编号： No.60876065

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 电工技术

项目作者： 金国钧

作者单位： 南京大学

项目金额： 30万元

中文摘要： 本项目针对纳米尺度量子微结构中的电子-光子耦合激发及其它相关问题进行了理论研究。通过执行本项目，我们重点研究了平面半导体微腔结构中的光学腔模与激子的相互作用，和由它们耦合产生的新型元激发- - -微腔激子极化激元的色散、受限效应、共振散射和相关动力学行为；研究了亚波长光波通过打孔金属薄膜的增强透射效应，考察了孔的几何结构和排列组态对增强透射的影响，阐明了表面等离极化激元在增强透射中所起的重要作用；研究了电子-光子相互作用以及各种外场对量子点、量子环等结构中的电子相位和自旋相关输运的影响，弄清了自旋-轨道耦合和温度对输运的作用；还研究了由碳单层和碳双层构造的纳米结构中与Dirac电子有关的物理问题。在执行本项目的三年时间内，已在Physical Review, Applied Physics Letters, European Physics Letters，Journal Applied Physics等国际著名物理学杂志上发表科学论文24篇；在国内《物理》和《物理学进展》杂志上发表综述论文各1篇；培养博士研究生4人。

中文关键词： 激子极化激元；半导体微腔；表面等离激元；自旋输运；单层石墨

英文摘要： Theoretical study has been carried out on the electron-photon coupling excitations and other related problems in the nanoscale quantum microstructures. Through performing this project, we have mainly studied on the interactions between optical cavity-modes and excitons in planar semiconductor microcavities,and the new type of coupled elementary excitations, microcavity exciton-polaritons, and their dispersion relations, confinement effects, resonant scatterings, and relevant dynamic behavior; studied the enhance transmission effects of subwavelength optical waves through perforated metalic films, investigated the influences from geometrical structures and arrangement configurations, demonstrated the important role of surface plasmon polaritons in enhanced transmission; studied the effects from electron-photon interactions and various applied fields on the electronic phases and spin-dependent transport in quantun dots and quantum rings, made clear the role of spin-orbit coupling and temperature on the transport; studied also the physical problems related to the Dirac electrons in artificial nano-structures composed of graphene and bilayer graphene. In the last three years, 24 scientific papers were published in the well-known journals, such as Physical Review, Applied Physics Letters, European Physics and Journal of Applied Physics; and also two review articles were published in Chinese; in the same period, four Ph D students were graduated.

英文关键词： exciton polariton; semiconductor microcavity; surface plasmon; spin transport; graphene